I didn't realize how far behind I was on updating this project, but much has happened since the last post. The plan was always to make this an enclosed machine, and to make it as quiet as we could manage. The sides were covered with sheet metal, the sheet metal lined with automotive sound deadening material, and the front with a big piece of 0.25" lexan. The lexan is held in place with magnet strip, which also insures perfect alignment without needing pins.
It has become known as "The Evil Dishwasher."